EP1S20F780I6N Altera, EP1S20F780I6N Datasheet - Page 410

• Manufacturer Part Number: EP1S20F780I6N
• Description: IC STRATIX FPGA 20K LE 780-FBGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S20F780I6N

• Number Of Logic Elements/cells: 18460
• Number Of Labs/clbs: 1846
• Total Ram Bits: 1669248
• Number Of I /o: 586
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 780-FBGA
• Family Name: Stratix
• Number Of Logic Blocks/elements: 18460
• # I/os (max): 586
• Frequency (max): 450.05MHz
• Process Technology: 0.13um (CMOS)
• Operating Supply Voltage (typ): 1.5V
• Logic Cells: 18460
• Ram Bits: 1669248
• Operating Supply Voltage (min): 1.425V
• Operating Supply Voltage (max): 1.575V
• Operating Temp Range: -40C to 100C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 780
• Package Type: FC-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Compliant

DDR Memory Support Overview
3–14
Stratix Device Handbook, Volume 2
The DQS pins are marked in the Stratix and Stratix GX device pin table as
DQS[9..0]T or DQS[9..0]B, where T stands for top and B for bottom.
The corresponding DQ pins are marked as DQ[9..0]T[7..0], where
[9..0] indicates which DQS group the pins belong to. The numbering
scheme starts from right to left on the package bottom view. When not
used as DQ or DQS pins, these pins are available as user I/O pins.
You can also create a design in a mode other than the ×8, ×16, or ×32
mode. The Quartus
unused DQ pins available as regular use I/O pins. For example, if you
create a design for ×9 mode for an RLDRAM II interface (nine DQ pins
driven by one DQS pin), the Quartus II software implements a ×16 mode
with seven DQ pins unconnected to the DQS bus. These seven unused
DQ pins can be used as regular I/O pins.
1
Stratix and Stratix GX device side I/O banks (I/O banks 1, 2, 5, and 6)
support SDR SDRAM, ZBT SRAM, QDR SRAM, QDRII SRAM, and DDR
SDRAM interfaces and can use any of the user I/O pins in these banks for
the interface. Since these I/O banks do not have any dedicated circuitry
for memory interfacing, they can support DDR SDRAM up to 150 MHz
in -5 speed grade devices. However, these I/O banks do not support the
HSTL-18 Class II I/O standard, which is required to interface with
RLDRAM II.
Clock Pins
You can use any of the DDR I/O registers in the top or bottom bank of the
device (I/O banks 3, 4, 7, or 8) to generate clocks to the memory device.
You can also use any of the DDR I/O registers in the side I/O banks 1, 2,
5, or 6 to generate clocks for DDR SDRAM interfaces on the side I/O
banks (not using the DQS circuitry).
On the top and bottom side of the device, the DQ and DQS pins
must be configured as bidirectional DDR pins to enable the DQS
phase-shift circuitry. If you only want to use the DQ and/or
DQS pins as inputs, you need to set the output enable of the DQ
and/or DQS pins to ground. Use the altdqs and altdq
megafunctions to configure the DQS and DQ pins, respectively.
However, you should use the Altera
data path for your memory interfaces.
®
II software uses the next larger mode with the
®
IP Toolbench to create the
Altera Corporation
June 2006